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Tytuł:
Criteria for the quality of the effects of waste management targets in 2015-2017 in the countries of the European Union
Autorzy:
Kuźmiński, Łukasz
Jaworski, Jarosław
Miązek, Paweł
Gawlik, Andrzej
Jakubowska, Agnieszka
Łopatka, Agnieszka
Norek, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/27324298.pdf
Data publikacji:
2023
Wydawca:
Fundacja Centrum Badań Socjologicznych
Tematy:
waste management
waste logistics
energy
classification
European Union
quality
cluster analysis
Opis:
For many years, the amount of waste generated on a global scale has shown an increasing tendency and their management and logistic is becoming a growing problem for most countries in the world. Waste management is an important issue to be addressed, as it concerns the three basic pillars of sustainable development: social, economic, and environmental. Therefore, it seems necessary to take initiatives to reduce the amount of waste generated and improve the waste management system. The article aims to analyse changes in the way of waste management and logistics in the European Union countries and the classification of these countries on the basis of the achieved effects in waste management. The article analyses three selected factors that reflect the effects of achieving environmental objectives in waste management. The cluster analysis method was used for the analysis. It found that EU countries differ in the quality of the results achieved in waste management, depending on the achievement of environmental management and sustainability objectives. In addition, the results of the analysis showed that the time factor has a significant impact on the classification of countries. High dynamics of the quality of effects in waste management were observed in the period under review.
Źródło:
Journal of Sustainable Development of Transport and Logistics; 2023, 8, 2; 6--22
2520-2979
Pojawia się w:
Journal of Sustainable Development of Transport and Logistics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monthly changes in physicochemical parameters of the groundwater in Nida valley, Poland (case study)
Autorzy:
Phan, Cong Ngoc
Strużyński, Andrzej
Kowalik, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/2203556.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
groundwater
Nida valley
physicochemical water property
statistical method
water quality classification
Opis:
The groundwater of the Nida valley was investigated to assess the quality of water source and monthly variations of the physicochemical parameters. A total of 70 water samples were collected from 7 sampling sites during a 10 months period from June 2021 to March 2022. Sampling frequency was once per month. The parameters such as temperature (T), electrical conductivity (EC), dissolved oxygen (DO), pH, total dissolved solids (TDS) were measured in-situ by using handheld device. Meanwhile, total nitrogen (TN), total phosphorus (TP), chloride (Cl – ), sulphate (SO42– ), manganese (Mn), iron (Fe), zinc (Zn), cadmium (Cd), lead (Pb), copper (Cu), chemical oxygen demand (COD) were analysed in the laboratory. According to the classification of Ministry of Marine Economy and Inland Navigation in Poland (2019), some investigated parameters are classified as unsatisfactory quality waters (class 4) and poor-quality waters (class 5) for a few specific months. Such as, TP concentrations obtained in June and January are classified as class 4, SO42– concentrations corresponded to classes 4 and 5 in June, July and August, and Mn concentrations (except in January) are settled in class 5. The high values of Fe in November are arranged in class 5 and in June, July to September and March are classified in class 4. Statistical methods were used as: Shapiro-Wilk test (α = 0.05), ANOVA test and post-hoc Tukey test (α = 0.05), Kruskal-Wallis test and Wilcoxon (Mann-Whitney) rank sum test (α = 0.05) estimated the significant differences in sampling months. Pearson correlation analysis (α = 0.01 and 0.05), principal component analysis (PCA) and cluster analysis showed correlation between the parameters and sampling months.
Źródło:
Journal of Water and Land Development; 2023, 56; 220--234
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multivariate Statistical Analysis of Groundwater Quality of Hassi Rmel, Algeria
Autorzy:
Mehdi, Metaiche
Hakim, Djafer Khodja
Amina, Aichour
Nourredine, Gaci
Powiązania:
https://bibliotekanauki.pl/articles/24201762.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
groundwater
water quality
principal component analysis
PCA
ascending hierarchical classification
HAC
diagram analysis
Hassi R'mel region
Opis:
The quality of Groundwater is characterized by physico-chemical parameters. They determine the way in which this water is used (water supply, irrigation, industry, etc.). This present study gives the highlighting of the hydrogeological and physico-chemical characteristics of aquifer waters in question resulting from the various wells, which aims to; gather, exploit and analyze the data, in order to determine their conformity with potability standards and their suitability for irrigation. Using multivariate statistical techniques including Principal Component Analysis (PCA), Hierarchical Cluster Analysis (ACH) and Diagram Analysis. They are applied to a dataset composed of 17 boreholes with 12 chemical variables over the entire study area, they were sampled in 2020. These boreholes are the principal water resources suppling Hassi R'mel w. Laghouat region in terms of drinking water and irrigation. Obtained results showed that the majority of groundwater in the Hassi R’mel region is hard; where approximately 20% of boreholes are characterized by fairly soft water, and approximately 5% are characterized by very hard water.
Źródło:
Journal of Ecological Engineering; 2023, 24, 5; 22--31
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rock mass classification in highway tunnel engineering during exploration phase and case study
Autorzy:
Yanqiang, Du
Bing, Xie
Powiązania:
https://bibliotekanauki.pl/articles/27312070.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
inżynieria tunelowa
tunel autostradowy
klasyfikacja górotworu
ciśnienie ziemi
metoda jakości
metoda podstawowa
tunnel engineering
highway tunnel
rock mass classification
earth pressure
basic method
quality method
Opis:
It is the foundation of tunnel engineering to classify the rock mass surrounding tunnels. However, it is not easy to precisely determine the class of rock mass in practice as sufficient geological exploration need to be completed before rock mass classification, and there exists some disputes referring to the rationalization of dozens of methods for rock mass classification through the world. The principles and procedures of the basic quality method, which are widely used in China, are presented in this paper, and the application process of the basic quality method is showed with a project case of Zhongnanshan highway tunnel which has operated in safety for nearly a decade. Then, both the advantages and disadvantages of the basic quality method are analyzed in terms of practical engineering applications. In consideration of the defects of the basic quality method, the concept of the subclassing of surrounding rock in grade III-V is developed in the end and the criterion is given to determine the subclass of rock mass. This study is aimed at providing some useful ideas and a reference for rock classification in highway tunnel engineering.
Źródło:
Archives of Civil Engineering; 2023, 69, 2; 141--153
1230-2945
Pojawia się w:
Archives of Civil Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
„Śmieci na wejściu, śmieci na wyjściu”. Wpływ jakości koderów na działanie sieci neuronowej klasyfikującej wypowiedzi w mediach społecznościowych
„Garbage in, Garbage out”. The Impact of Coders’ Quality on the Neural Network Classifying Text on Social Media
Autorzy:
Matuszewski, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/2131910.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
sieci neuronowe
klasyfikacja danych tekstowych
modele nadzorowane
opinion mining
jakość koderów
text classification
neural networks
supervised models
quality of coders
Opis:
Jedna z głównych decyzji przy ręcznym kodowaniu danych tekstowych dotyczy tego, czy kodowanie ma być weryfikowane. W przypadku modeli nadzorowanych prowadzi to do istotnego dylematu: czy lepszym rozwiązaniem jest dostarczenie modelowi dużej liczby przypadków, na których będzie się uczyć kosztem weryfikacji poprawności danych, czy też zakodowanie każdego przypadku n-razy, co pozwoli porównać kody i sprawdzić ich poprawność, ale jednocześnie n-krotnie zmniejszy zbiór danych treningowych. Taka decyzja może zaważyć nie tylko na ostatecznych wynikach klasyfikatora. Z punktu widzenia badaczy jest istotna również dlatego, że – realistycznie zakładając, że badania mają ograniczone źródło finansowania – nie można jej cofnąć. Wykorzystując 100 tys. unikatowych i ręcznie zakodowanych tweetów przeprowadzono symulacje wyników klasyfikatora w zależności od kontrolowanego odsetka błędnie zakodowanych dokumentów. Na podstawie danych przedstawiono rekomendacje.
One of the critical decisions when manually coding text data is whether to verify the coders’ work. In the case of supervised models, this leads to a significant dilemma: is it better to provide the model with a large number of cases on which it will learn at the expense of verifying the correctness of the data, or whether it is better to code each case n-times, which will allow to compare the codes and check their correctness but at the same time will reduce the training dataset by n-fold. Such a decision not only affect the final results of the classifier. From the researchers’ point of view, it is also crucial because, realistically assuming that research has limited funding, it cannot be undone. The study uses a simulation approach and provides conclusions and recommendations based on 100,000 unique and hand-coded tweets.
Źródło:
Studia Socjologiczne; 2022, 2; 137-164
0039-3371
Pojawia się w:
Studia Socjologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Artificial intelligence for supervised classification purposes: Case of the surface water quality in the Moulouya River, Morocco
Autorzy:
Manssouri, Imad
Talhaoui, Abdelghani
El Hmaidi, Abdellah
Boudad, Brahim
Boudebbouz, Bouchra
Sahbi, Hassane
Powiązania:
https://bibliotekanauki.pl/articles/1841945.pdf
Data publikacji:
2021
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
artificial intelligence
environment
supervised classification
the Moulouya River
water quality
Opis:
From a management perspective, water quality is determined by the desired end use. Water intended for leisure, drinking water, and the habitat of aquatic organisms requires higher levels of purity. In contrast, the quality standards of water used for hydraulic energy production are much less important. The main objective of this work is focused on the development of an evaluation system dealing with supervised classification of the physicochemical quality of the water surface in the Moulouya River through the use of artificial intelligence. A graphical interface under Matlab 2015 is presented. The latter makes it possible to create a classification model based on artificial neural networks of the multilayer perceptron type (ANN-MLP). Several configurations were tested during this study. The configuration [9 8 3] retained gives a coefficient of determination close to the unit with a minimum error value during the test phase. This study highlights the capacity of the classification model based on artificial neural networks of the multilayer perceptron type (ANN-MLP) proposed for the supervised classification of the different water quality classes, determined by the calculation of the system for assessing the quality of surface water (SEQ-water) at the level of the Moulouya River catchment area, with an overall classification rate equal to 98.5% and a classification rate during the test phase equal to 100%.
Źródło:
Journal of Water and Land Development; 2021, 50; 240-247
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Enhancement of COVID-19 symptom-based screening with quality-based classifier optimisation
Autorzy:
Kozielski, Michał
Henzel, Joanna
Tobiasz, Joanna
Gruca, Aleksandra
Foszner, Paweł
Zyla, Joanna
Bach, Małgorzata
Werner, Aleksandra
Jaroszewicz, Jerzy
Polańska, Joanna
Sikora, Marek
Powiązania:
https://bibliotekanauki.pl/articles/2086854.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
classification
classification quality
screening
COVID-19
klasyfikacja
jakość klasyfikacji
badania przesiewowe
Opis:
Efforts of the scientific community led to the development of multiple screening approaches for COVID-19 that rely on machine learning methods. However, there is a lack of works showing how to tune the classification models used for such a task and what the tuning effect is in terms of various classification quality measures. Understanding the impact of classifier tuning on the results obtained will allow the users to apply the provided tools consciously. Therefore, using a given screening test they will be able to choose the threshold value characterising the classifier that gives, for example, an acceptable balance between sensitivity and specificity. The presented work introduces the optimisation approach and the resulting classifiers obtained for various quality threshold assumptions. As a result of the research, an online service was created that makes the obtained models available and enables the verification of various solutions for different threshold values on new data.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 4; e137349, 1--8
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Differentiation of human potential quality in regions of Ukraine: demographic and health aspects
Zróżnicowanie jakości potencjału ludzkiego w regionach Ukrainy: aspekty demograficzne i zdrowotne
Autorzy:
Stepura, T.
Powiązania:
https://bibliotekanauki.pl/articles/2117518.pdf
Data publikacji:
2020
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
human potential quality
demography
valeology
regions of Ukraine
classification
discriminatory analysis
jakość kapitału ludzkiego
demografia
waleologia
regiony Ukrainy
klasyfikacja
analiza dyskryminacyjna
Opis:
This study describes a method for evaluating the quality of human potential within Ukraine’s current conditions, by looking at the demographic and valeologic (healthy living) component. This research was conducted on the basis of Ukraine’s regional data. In addition to measuring the level of quality development according to this component, the method aims to classify regions on its basis. Such classification is a justification for regional policies geared at human development and for distribution of resources by region. The study uses a discriminant analysis as well as some methods of taxonomic analysis. As a result of the analysis, Ukrainian regions were divided into four groups. The method applied in this research is universal and can be used to assess and classify regions according to other components of human potential quality, provided that relevant indicators are applied. It can also be approved and implemented in other countries because the statistical database is quite unified in terms of indicators that are included in the analysis.
W artykule przedstawiono metodę oceny jakości potencjału ludzkiego we współczesnej Ukrainie poprzez pryzmat komponentów demograficznego i waleologicznego (w tym zdrowego trybu życia). Analizę przeprowadzono na podstawie danych regionalnych. Oprócz pomiaru poziomu rozwoju jakości potencjału ludzkiego metoda ta umożliwia klasyfikację regionów. Taka klasyfikacja stanowi uzasadnienie stosowania polityki regionalnej ukierunkowanej na rozwój człowieka oraz podziału środków między regiony. W badaniu zastosowano analizę dyskryminacyjną, a także wybrane metody analizy taksonomicznej. W wyniku analizy ukraińskie regiony zostały podzielone na cztery grupy. Metoda zastosowana w badaniu jest uniwersalna i może być wykorzystywana do oceny oraz klasyfikacji regionów według innych elementów jakości potencjału ludzkiego pod warunkiem zastosowania odpowiednich wskaźników. Może być również wdrożona w badaniach innych krajów, ponieważ baza danych statystycznych jest dość jednolita pod względem wskaźników wykorzystanych w analizie.
Źródło:
Acta Scientiarum Polonorum. Oeconomia; 2020, 19, 1; 49-59
1644-0757
Pojawia się w:
Acta Scientiarum Polonorum. Oeconomia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Education Quality Detection Method Based on the Probabilistic Neural Network Algorithm
Autorzy:
Wu, Changdong
Jiang, Hua
Wang, Ping
Powiązania:
https://bibliotekanauki.pl/articles/328682.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
detection
probabilistic neural network
classification
students' achievement
education quality
probabilistyczna sieć neuronowa
klasyfikacja
osiągnięcia studentów
jakość kształcenia
Opis:
The traditional education quality detection method is too single and unreasonable, which is not suitable to evaluate students' ability comprehensively. In this paper, the probabilistic neural network (PNN) algorithm is used to detect the education quality by considering the important impact between the various achievements of students. PNN algorithm originates from Bayesian decision rule, and it uses the non-linear Gaussian Parzen window as the probability density function. As PNN model has the virtues of strong nonlinear and anti-interfering ability, it is fit to detect the education quality by classifying the students' achievements. Besides, the influences of different evaluation models on classification accuracy and efficiency are also discussed in this paper. Furthermore, the effect of spread value on PNN model is also discussed. Finally, the actual data are used to detect the education quality. Experimental results show that the detection accuracy can reach 95%, and the detection time is only 0.0156s based on the proposed method. That is to say, the method is a very practical detection algorithm with high accuracy and efficiency. Moreover, it also provides a reference for how to further improve the teaching quality.
Źródło:
Diagnostyka; 2020, 21, 4; 79-86
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Growth performance of Dipterocarpus alatus and Hopea odorata in degraded secondary forest land in Southern Vietnam
Autorzy:
Tuan, N.T.
Dinh, T.T.
Powiązania:
https://bibliotekanauki.pl/articles/2077644.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Dipterocarpus species
indigenous trees
aboveground biomass
tree biosocial position
tree
quality classification
Opis:
The two dipterocarp species, Dipterocarpus alatus and Hopea odorata, have been widely planted in degraded forest land in Southern Vietnam in the last decades. However, study on growth characteristics of these species and their associated factors is still limited. Therefore, the present study aimed to examine growth performance in different stand densities, and classify tree quality in 28-year old D. alatus and H. odorata plantations. Our results of analysis of covariance (ANCOVA) indicated that in pure stand aged 28 years, D. alatus outperformed H. odorata in tree growth, biomass and volume. In addition, except for four growth variables including tree height at the first branch (Hb), crown length (CL), crown ratio (CR) and linear crown index (LCI), the remaining variables were negatively affected by stand density. We observed that medium quality trees occupied the greatest proportion in both D. alatus (47%; n = 425) and H. od- orata (50%; n = 400). Except for CR and LCI, the class of good quality trees had the greatest values in the remaining examined growth variables. In linear discriminant analysis (LDA) model, the classification accuracy of testing set was relatively high in both D. alatus (85%) and H. odorata (91%). The most impor- tant variables for tree quality classification in D. alatus were crown diameter (CD) and diameter at breast height (DBH). Meanwhile, the most important variables in H. odorata were CD and tree height (H). These obtained results suggest that controlling crown size is important for shaping individual tree quality. Our data evidenced that D. alatus and H. odorata planted in Southern Vietnam with density equal or less than 500 trees per ha could yield high proportion of good and medium quality trees.
Źródło:
Dendrobiology; 2020, 83; 60-67
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
How to achieve customer satisfaction? Perspective of logistics outsourcing performance
Logistics outsourcing performance jako czynnik sprzyjający satysfakcji klientów z usług logistycznych
Autorzy:
Świtała, Marcin
Cichosz, Marzenna
Trzęsiok, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/361836.pdf
Data publikacji:
2019
Wydawca:
Wyższa Szkoła Logistyki
Tematy:
performance
satisfaction
service quality
Kano's model
logistics service providers
LSPs
sustainability
classification tree
satysfakcja
jakość usług
model Kano
usługodawcy logistyczni
rozwój zrównoważony
drzewo decyzyjne
Opis:
Background: The inspiration to undertake research in the field of logistics customer service was formed by the strong relationship between service performance and customer satisfaction, observed within a study of the needs of logistics service providers' (LSPs) customers. The paper aims to understand which elements of service performance are important to customers purchasing logistics services in Poland and are worth investing in by LSPs. Methods: The study was conducted among 112 production and trade enterprises - customers of LSPs selected in a targeted manner. A questionnaire method was used. Based on the respondents' answers, a model was built in the form of a classification tree with customer satisfaction as a response variable and features of service performance as predictors. Results: The results show that two main characteristics affect customer satisfaction levels, namely logistics costs and shorter delivery times. According to the respondents, improving the level of customer service and increasing flexibility turned out to be less significant. However, the discriminant analysis has shown that high satisfaction with logistics outsourcing can also be achieved with the assumption of longer delivery. Conclusions: In order to stand out in the logistics services market, LSPs should not only invest in reducing costs and improving service times, but also in factors that will cause above-average customer satisfaction, like improved operational flexibility and service levels, including pro-environmental activities.
Wstęp: Inspiracją do podjęcia badań z zakresu logistycznej obsługi klienta była silna relacja między performance'm obsługi a satysfakcją klienta, którą zaobserwowano w badaniu klientów operatorów logistycznych. Autorzy chcieli bliżej poznać, które elementy performance'u obsługi są istotne dla klientów nabywających usługi logistyczne w Polsce i jak te elementy wpływają na poziom satysfakcji klientów z usług logistycznych. Badanie miało na celu wskazanie operatorom logistycznym, w które elementy performance'u obsługi warto inwestować. Metody: Badanie zostało przeprowadzone wśród 112 przedsiębiorstw produkcyjnych i handlowych - klientów LSPs dobranych w sposób celowy. Wykorzystano metodę kwestionariusza ankietowego. W oparciu o odpowiedzi respondentów zbudowano model w postaci drzewa klasyfikacyjnego z satysfakcją klienta w charakterze zmiennej objaśnianej oraz cechami performance'u obsługi w roli zmiennych objaśniających. Wyniki: Wyniki pokazują, iż o poziomie satysfakcji klienta decydują głównie dwie cechy, tj. niższe koszty logistyczne oraz krótsze czasy dostaw. Mniej istotne, wg respondentów, okazały się poprawa poziomu obsługi klienta oraz wzrost elastyczności. Jednak analiza dyskryminacyjna pozwoliła zauważyć, że wysoką satysfakcję z logistycznej obsługi klienta można również osiągnąć przy założeniu dłuższych czasów dostaw. Wnioski: Chcąc wyróżnić się na rynku usług logistycznych, LSP powinien inwestować nie tylko w obniżkę kosztów i poprawę czasu obsługi, ale również w czynniki, które spowodują ponadprzeciętną satysfakcję klienta, tj. poprawę elastyczności działania i poziomu obsługi, w tym działania proekologiczne.
Źródło:
LogForum; 2019, 15, 1; 39-51
1734-459X
Pojawia się w:
LogForum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Models of quality costs calculation and their classification
Autorzy:
Sadkowski, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/392995.pdf
Data publikacji:
2019
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
classification
quality costs
model
quality costs calculation
klasyfikacja
koszty jakości
kalkulacja kosztów jakości
Opis:
Quality costs calculation is a tool companies use to measure quality costs. The origins of interest in the field noted in foreign literature and practice date to the end of the 1960s, while in Poland the subject has been known since the 1970s. The purpose of the paper is to present and classify selected models of quality costs calculation. The consequences of the undertaken research work will be the organization of knowledge about models of this calculation, and the specification of the key elements used to build them. Quality costs calculation is the subject of the research. In order to achieve the pursued research objective the critical analysis method was applied to the literature on the subject in the areas of quality management and management accounting, as well as to selected journals. The present paper forms a body of theory with which to develop the author’s own model of quality costs calculation.
Źródło:
Organizacja i Zarządzanie : kwartalnik naukowy; 2019, 2; 117-129
1899-6116
Pojawia się w:
Organizacja i Zarządzanie : kwartalnik naukowy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The role of the quality of online banking services in the shaping of consumer loyalty. Proof with the use of classification trees
Autorzy:
Lotko, Aleksander
Korneta, Paweł A.
Powiązania:
https://bibliotekanauki.pl/articles/326767.pdf
Data publikacji:
2019
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
quality
online banking services
customer loyalty
classification trees
multidimensional exploratory techniques
jakość
usługi bankowości internetowej
lojalność klientów
drzewa klasyfikacyjne
wielowymiarowe techniki eksploracyjne
Opis:
The purpose of this paper was to prove the role of the quality of online banking services in the shaping of consumer loyalty. Data specifying (1) consumer characteristics, (2) type and manner of using services and (3) levels of partial service quality assessments were analysed. Empirical research was carried out on a sample of 384 consumers, and the results were processed by performing a multidimensional exploratory analysis with the use of classification trees and the CTree algorithm. As a result, it was proven that for the identified types of loyalty, both cognitive and active-conative loyalty, the only statistically important predictors of consumer loyalty are some indicators of partial service qualities (6 in the first model and 4 in the second model). In this way, the rank of the quality in shaping of consumer behaviours in a digital economy was empirically proven.
Źródło:
Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska; 2019, 134; 121-133
1641-3466
Pojawia się w:
Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Image classification for jpeg compression
Autorzy:
Tichonov, Jevgenij
Kurasova, Olga
Filatovas, Ernestas
Powiązania:
https://bibliotekanauki.pl/articles/103336.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
Image quality
image classification
JPEG algorithm
storage of images
quality prediction
SSIM
PSNR
jakość obrazu
klasyfikacja obrazu
algorytm JPEG
przechowywanie obrazów
prognozowanie jakości
Opis:
We analyse storage problems of digital images in accordance with image quality and image compression efficiency. Storage problems are relevant for Cloud storage and file hosting services, online file storage providers, social networks, etc. In this paper, an approach is proposed to process a group of images with a JPEG algorithm that all the processed images satisfy the minimum threshold of quality with the automatic selection of the quality factor (QF). The experimental investigation reveals advantages of the compression efficiency of the proposed approach over the traditional JPEG algorithm. The proposed approach enables saving storage spaces while maintaining the desirable image quality.
Źródło:
Advances in Science and Technology. Research Journal; 2018, 12, 2; 29-34
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Shaping of Architecturally Exposed Steel Structures
Autorzy:
Tylek, I.
Powiązania:
https://bibliotekanauki.pl/articles/105048.pdf
Data publikacji:
2018
Wydawca:
Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza
Tematy:
exposition of steel structure
classification of AESS
higher quality requirements
higher costs of AESS
Opis:
Architecturally Exposed Structural Steel (AESS) is steel that must be designed to be structurally sufficient to support the primary needs of the structure and -at the same time - remains exposed to view, being a significant part of architectural language of the building [4, 6]. The quality requirements of AESS typically exceeds the requirements of Standard Structural Steel (SSS), what increases the time and costs of the design and execution of AESS. Currently used classification of AESS distinguishes 5 categories of execution quality. This categorization has a hierarchical structure, each higher category of structure execution contains all the properties of lower category. The basis of presented classification is the degree of human visual perception of the structure. It is mainly related to the distance of the potential observer from the structure, which allows in varying degrees to see the details of structure execution. Joints and connections are the main means of architectonic expression in architecturally exposed steel structures. The principles of joints and connections shaping in AESS are the same as for SSS but additionally some requirements to the expected aesthetic are formulated. This additional requirements cause that AESS can be significantly (even a few hundred percent) more expensive than SSS with exactly the same functionality and durability. However, PN-EN 1090-2 [7] gives no provisions about AESS executions, which may impede mutual understanding between architect, structural engineer, contractor and investor.
Źródło:
Czasopismo Inżynierii Lądowej, Środowiska i Architektury; 2018, 65, 2; 133-144
2300-5130
2300-8903
Pojawia się w:
Czasopismo Inżynierii Lądowej, Środowiska i Architektury
Dostawca treści:
Biblioteka Nauki
Artykuł
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